| FASTENER LENGTH | 0.250 INCHES NOMINAL |
| HEAD STYLE | ROUND |
| HEAD DIAMETER | 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM |
| HEAD HEIGHT | 0.107 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | SLOT |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| SCREW MATERIAL | COPPER ALLOY |
| SCREW MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-W-321 FED SPEC SINGLE MATERIAL RESPONSE |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 1S STYLE |